.025 I said its a miss fire cuz that's what it sounds like but the wastegate I like that theory!
I using my friends laptop so hopefully Tom can check it out soon

Also it might be turbo flutter. (Theres another word for it) but I cant remember it right now. But look on turbosmarts web site. There are a few ways to hook up the wg to the electronic boost control. Try the way it says for maximum boost. *BUT MAKE SURE YOU RESET THE EBC TO ZERO
Do a run and see how much bosst it makes at zero. Then adjust it from there.
If I rember, I hooked it up like that once, and blew the charge pipes off at around 25 psi. Its just how you hook up the vacuum hoses to it and the wg. Very easy. It will hold the pressure for sure that way..